plastic laminate with stainless steeel edge banding made by Bulthaup, it was part of the kitchen system.
That looks like laminate or solid surface material with a stainless edge.
laminate cabinet tops with stainless steel strips
counter top with stainless steel edging
cool laminate backsplash that goes up the wall
Gray laminate counters with stainless edge.
stainless steel backsplash, grey counter edged with steel?
Plastic laminate counters with silver edges
with most counters, stick with a damp cloth or sponge and mild detergent for routine cleaning. Avoid bleach, as it can cause discoloration. Long-term care is a breeze, as the top coat of protection is permanent and requires no sealing.